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Softa [21]
2 years ago
9

What is the gcf of the numerator and denominator of the rational expression

Mathematics
1 answer:
Roman55 [17]2 years ago
5 0
\frac{3x-15}{x^2-x-20} = \frac{3(x-5)}{(x+4)(x-5)}

The only common factor is (x -5).

Selection A is appropriate.
You might be interested in
Find the equation of the line perpendicular to y = 3x - 6 that runs through the point (-1, -3).
Mkey [24]

Answer:

Step-by-step explanation:

I'll get you the answer. You pick it from what you are given.

The slope of the perpendicular is m1 * m2 = - 1

m1 = 3

m2 = -1 / m1

m2 = -1 / 3

So far what you have is

y = (-1/3) x + b

Use the point go get b

x = -1

y = - 3

y = (-1/3) *x + b

-3 = (-1/3)*-1 + b

-3 = 1/3 + b  

-3 - 1/3 = b

b = -3.33333  or

b = -3 1/3

b = -10/3              

So the answer is

y = (- 1/3) x - 10/3            or

y = (-1 / 3)x - 3.3333       or

y = (-1/3 )x  - (3 1/3)

6 0
2 years ago
ᵂᴿᴵᵀᴱ ᴱᴬᶜᴴ ᶠᴿᴬᶜᵀᴵᴼᴺ ᴼᴿ ᴹᴵˣᴱᴰ ᴺᵁᴹᴮᴱᴿ ᴬˢ ᴬ ᴰᴱᶜᴵᴹᴬᴸ!!
Contact [7]

Answer:

3. \displaystyle 4,12

2. \displaystyle \: \: \: \: \: - \\ 0,46

1. \displaystyle 0,875

Step-by-step explanation:

3. Every 25 is worth 4, and since 3 by 4 is 12, 3⁄25 gets set to ",12", then attach the <em>whole number</em> [4] to it, giving you 4,12.

2. Every 15 is worth 6⅔, and since 7 by 6⅔ is 46⅔, moving the decimal mark twice to the <em>left</em> will give you the above answer, in <em>bar</em><em> </em><em>notation</em>, since it is a repeated decimal.

1. Every 8 is worth 12½, and since 7 by 12½ is 87½ [87,5], moving the decimal mark twice to the <em>left</em><em> </em>will give you 0,875.

I am joyous to assist you anytime.

5 0
3 years ago
How do you solve these two questions and what are the answers?
Sphinxa [80]

Answer:

a) -6/2

b) -9/2

Step-by-step explanation:

a) rearrange by making y the subject as y = mx+c

y = -6/2x-9/2

the gradient = -6/2

b) c is the y-intercept as it touch the y-axis, therefore -9/2 is where the line crosses the y-axis

6 0
1 year ago
What is csc (2π/3)? Explain.
masha68 [24]

we are given the expression csc (2 pi / 3 ) and is asked to evaluate the expression. According to the trigonometric identities, the inverse of cosecant (CSC) is sine (sin) function. hence using the calculator in radians mode, sin 2pi/3 is equal to 2/sqrt 3. Taking the reciprocal of the answer, the final answer is 2 sqrt3 over 3.
8 0
3 years ago
Identify the sequence as arithmetic geometric or neither -8, -3, 6, 11, -22
melomori [17]

Answer:

Neither

Step-by-step explanation:

Check if it's arithmetic:

-8, -3, 6, 11, -22

+5  +6   +5  -33

Nope

Check if geometric:

-8, -3, 6, 11, -22

*3/8  *-2 *11/6 *-2

Nope

So it's neither

5 0
3 years ago
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